San Antonio to San Marcos

via I-35

25 min
Drive Time
12
Miles
$1
Gas Cost
$0
Tolls
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Trip Details

Distance12 miles (19 km)
Drive Time25 min
RouteI-35
Best TimeMid-morning (9-11 AM)

Fuel Costs

Gas (30 mpg)~0.4 gallons
Est. Cost$1

Frequently Asked Questions

How long does it take to drive from San Antonio to San Marcos?
The drive from San Antonio to San Marcos takes approximately 25 min covering 12 miles via I-35. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for San Antonio to San Marcos?
At 30 MPG and $3.50/gallon, expect to spend approximately $1 on gas for this 12-mile trip. You'll need about 0.4 gallons of fuel.
What is the best time to drive from San Antonio to San Marcos?
Mid-morning (9-11 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the San Antonio to San Marcos route?
This route is primarily toll-free, though some bridges or tunnels may have small fees.